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MDCAT
Biology
2008

Biology · Biodiversity | Variety of Life

Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.

Question

Phages viruses are usually abundant in the intestine of man and animals because. 

Options
  • A

    Abundant bacteria are present 

  • B

    Abundant water is present

  • C

    Abundant nutrients are present

  • D

    They can only live at human body temperature

Explanation

Phages can translocate through the mucosa to lymph and internal organs and play a role as regulators of the bacterial population in the gut. Increasing abundance of phages in the gut mucosa may reduce colonization by bacteria. Moreover, phages may have an immunomodulatory role in the immune response in the human gut. Bacteriophages play important roles in regulating the intestinal human microbiota composition, dynamics, and homeostasis, and characterizing their bacterial hosts is needed to understand their impact.

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Tagged under Biology · Biodiversity | Variety of Life · 2008